Android刷新ListView

Question

我知道关于这个问题有类似的问题，但没有一个对我有用。

我正在制作一个具有ListView 的闹钟应用程序，其中显示了存储在数据库中的所有闹钟。当用户长按其中一个ListView 项目时，会显示一个对话框，确认他们确实要删除选定的警报，单击“是”按钮后，警报将被删除。

问题是我的ListView 仅在我开始另一个活动后才会刷新，然后回到ListView 所在的那个，我想知道我需要做什么才能在警报响起时立即刷新它已删除。

PS.: 我已经试过adapter.notifyDataSetChanged();

这是我的代码：

UITools.adaptAlarmsListView(this, listView, R.layout.alarm_listview_item);
listView.setOnItemLongClickListener(
            new AdapterView.OnItemLongClickListener()
            {
                @Override
                public boolean onItemLongClick(AdapterView<?> adapterView,
                                               View view,
                                               final int position, long l)
                {
                    final boolean[] deletedFlag = {false}; // Tells if the alarm has been deleted
                    UITools.showDialogue(HomeActivity.this,
                            getString(R.string.delete),
                            getString(R.string.delete_question),
                            R.drawable.bin, getString(R.string.no),
                            new DialogInterface.OnClickListener()
                            {
                                @Override
                                public void onClick(
                                        DialogInterface dialogInterface, int i)
                                {
                                    // Do nothing
                                }
                            }, getString(R.string.yes),
                            new DialogInterface.OnClickListener()
                            {
                                @Override
                                public void onClick(
                                        DialogInterface dialogInterface, int i)
                                {
                                    AlarmDAO.delete(getBaseContext(),
                                            position + 1);
                                    UITools.showToast(getBaseContext(),
                                            getString(R.string.deleted),
                                            Toast.LENGTH_SHORT);
                                    deletedFlag[0] = true;
                                }
                            });
                    if (deletedFlag[0])
                    {
                        listView.setAdapter(null);
                        UITools.adaptAlarmsListView(HomeActivity.this,
                                listView, R.layout.alarm_listview_item);
                    }
                    return true;
                }
            }
    );

UITools.adaptAlarmsListView：

/**
 * Adapts the alarms ListView
 * @param context - Context
 * @param listView - ListView
 * @param listViewItemId - int
 */
public static void adaptAlarmsListView(Context context, ListView listView,
                                 int listViewItemId)
{
    Alarm[] alarms = AlarmDAO.getAlarms(context);
    AlarmAdapter adapter = new AlarmAdapter(context, listViewItemId, alarms);
    listView.setAdapter(adapter);
}

Answer 1

If your are using a fragment, just create an interface on that fragment 
and over the interface in the activity that hosts the fragment and
replace the present fragment with itself. or
create a method the re-initializes the listview, it adapter and the list.
if this is not clear enough, paste your code so i can check where the problem is.